Aggregates

Aggregates are the granular foundation materials that underpin roads, paths, driveways, and hardstanding areas, providing the stable, load-bearing sub-base that surface finishes depend on. At McMahons, our aggregates range currently features Clause 804 crushed stone - a specification-grade material widely used across domestic and commercial groundworks projects in Ireland.

Our Aggregates Range

McMahons stocks Clause 804 crushed stone in 1 tonne bags, meeting the SR21 standard for Type 1 granular sub-base material.

• Clause 804 crushed stone (SR21) - 1 tonne bag - a graded, well-compacted crushed stone material compliant with Irish SR21 specification, suitable for use as a compacted sub-base layer under driveways, paths, patios, and hardstanding areas. Provides a stable, free-draining foundation that resists movement and settlement under load when properly laid and compacted.

For sands, mortar mixes, and ballast, browse our Sand & Ballast range, or explore our full Cement & Aggregates section for cement, lime, and screeding products.

When specifying sub-base material, confirm the required depth for your application - typically 100-150mm compacted for pedestrian areas and up to 200mm or more for vehicular driveways depending on ground conditions. Always compact in layers and check that the finished level allows for your surface course thickness above.

Why Choose McMahons for Your Aggregates?

With nearly two centuries serving Irish builders and contractors, McMahons understands that the right material delivered on time makes all the difference on site. Our branches can arrange tonne bag delivery direct to your project. Find your nearest McMahons branch for expert advice on quantities and groundworks materials.